The Warmup period begins when the printer's power is turned
ON, and ends when the fusing roller temperature reaches 172° C.
When the printer is switched ON, the exhaust fan (FM1) begins
low-speed rotation and the fusing roller maintains 172° C. The
DC controller then switches the main motor (M1) ON, and applies
AC high voltage to the primary charging roller to remove any
residual charge from the photosensitive drum. Negative high
voltage is applied to the transfer roller to clean toner build-up
from the roller. When the fusing roller reaches 172° C, the main
motor, and AC high voltage, are turned OFF.
After the power is switched on, the Main Motor (M1) and the
pickup motor (M2) turn for approximately 4 seconds to clear the
paper path. The motors stop rotation when the fuser reaches
After the printer warms up, the message 00 READY is displayed,
the printer goes "on-line," and the control panel keys become
When the Warmup period is completed, the message 00 READY is
displayed. At this point the printer is in the Standby period. This
indicates that the printer is ready for printing. The fusing roller
remains at a constant temperature of 172° C, and the exhaust fan
continues operating at low-speed rotation.
When the printer enters PowerSave mode, fuser current is shut
down, allowing the fuser to cool to room temperature without
posting a 50 SERVICE error. The exhaust fan continues to operate
at low speed.
Functional Overview 5-37